details element The HTML details element (<details>) is used as a disclosure widget from which the user the retrieve additional information, meta element Specifies general high-level information about a document, base element Specifies a base URL for all of the relative URLs in the document to use. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.
Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':